Optical power limiting materials with an ultralow threshold
| Project/Area Number |
22750132
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Functional materials chemistry
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
HIRATA Shuzo 九州大学, 最先端有機光エレクトロニクス研究センター, 特任助教 (20552227)
|
|---|
| Project Period (FY) |
2010 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
|
|---|
| Keywords | 生物性 / 光制限効果 / 逆過飽和吸収 / 励起状態 / 励起状態寿命 / 光増感 / ステロイド / エネルギー移 / 重水素化 / 励起三重項 / オプティカルリミット / 常温リン光 / 金属錯体 |
|---|
| Research Abstract |
We developed an organic RSA material that displays a large decrease in transmittance upon exposure to weak incoherent light, such as that from light emitting diodes(LEDs), at room temperature(RT) in air. To minimize threshold of transmittance decrease(Fth) and obtain a large decrease in transmittance, two kinds of guest compounds dispersed in an amorphous steroidal host matrix were used. One guest compound is a metal complex used as a donor for photosensitization and the other is a deuterated aromatic deuterated carbon that behaves as an acceptor to allow efficient accumulation of the Ti state. The accumulation of long-lived RT triplet excitons of the acceptor with a large triplet-triplet absorption coefficient by photosensitization of the donor allowed a drastic decrease in the power threshold to be realized.
|
Report
(3 results)
Research Products
(33 results)
